臭氧催化/超滤组合工艺去除石化反渗透浓水中有机物  

Removal of Organics in Petrochemical Reverse Osmosis Concentrated Water by Ozone Catalysis/Ultrafiltration Combined Process

作　　者：祁琳 仲慧赟 刘绍山 陈云亮 董良飞[1,2] QI Lin;ZHONG Huiyun;LIU Shaoshan;CHEN Yunliang;DONG Liangfei(School of Environmental Science and engineering,Changzhou University;School of Urban Development,Changzhou University;Jiangsu Zhixin Jinchuang Technology Co.,Ltd.:Changzhou 213164,China)

机构地区：[1]常州大学环境科学与工程学院 [2]常州大学城市建设学院 [3]江苏智芯今创科技有限公司,江苏常州213164

出　　处：《水处理技术》2024年第5期113-118,共6页Technology of Water Treatment

基　　金：江苏省省级生态环境科研项目(2022013);常州市领军型创新人才引进培育项目(CQ20210117);2022年国家(兵团)科技计划项目“基于自然冷冻机理的苦咸水净化工艺技术研究”(2021GXGG04)

摘　　要：由于石化反渗透浓水含盐量高且存在难降解有机物,不利于水资源的回收利用。采用臭氧催化/超滤组合工艺去除反渗透浓水中的有机物,通过分析臭氧催化氧化预处理实验中影响因素并考察超滤膜比通量变化规律并结合膜污染动力学模型揭示膜污染机理。研究结果表明:当臭氧催化氧化预处理条件为臭氧浓度17 mg/L、催化剂投加量体积比40%、紫外光强0.7 mW/cm^(2)、反应时间40 min,臭氧催化氧化预处理效果最佳;探讨孔径、流速、温度对膜比通量及膜污染影响,得出最佳运行条件为孔径20 nm、流速4.2 L/min、温度40℃且孔径越大、温度越低、流速越小,膜比通量越小,膜污染越严重;基于三维荧光光谱(3D-EEM)及水质分析,臭氧催化/超滤组合工艺能高效去除石化反渗透浓水中有机物。本研究构建的组合工艺可为石化反渗透浓水中的有机物去除提供参考。Because of the high salt content and the existence of difficult-to-degrade organic matter in petrochemical reverse osmosis concentrated water,it is not conducive to the recovery and utilization of water resources.The ozone catalysis/ultrafiltration combined process was used to remove the organics in RO-concentrated water.The membrane fouling mechanism was revealed by analyzing the influencing factors of the ozone catalytic oxidation pretreatment and investigating the specific flux of the ultrafiltration membrane.The results showed that the optimal pretreatment conditions were ozone concentration of 17 mg/L,volume ratio of catalyst of 40%,UV intensity of 0.7 mW/cm^(2) and reaction time of 40 min.The effects of pore size,flow rate and temperature on membrane specific flux and fouling were investigated.The results showed that the optimum operating conditions were a pore size of 20 nm,flow rate of 4.2 L/min,temperature of 25 °C,and the larger pore size,the lower temperature and the flow rate,based on three-dimensional fluorescence spectroscopy(3D-EEM) and water quality analysis.The combined process of ozone catalysis and ultrafiltration can effectively remove organic compounds in petrochemical reverse osmosis concentrated water.The combined process can provide a reference for the removal of organic matter in petrochemical reverse osmosis concentrated water.

关 键 词：石化反渗透浓水 有机物 臭氧催化 超滤 

分 类 号：X703.1[环境科学与工程—环境工程]